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Finding the Fourth Proportional to 90,489.94, 124,876.22 and 52,771.48

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Solution

The fourth proportional to 90,489.94, 124,876.22 and 52,771.48 is: 72,824.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,489.94 : 124,876.22 = 52,771.48 : x
  2. Step 2: Convert to fraction form
    90,489.94/124,876.22 = 52,771.48/x
  3. Step 3: Cross multiply
    90,489.94x = 124,876.22 × 52,771.48
  4. Step 4: Simplify right side
    90,489.94x = 6,589,902,370.16
  5. Step 5: Solve for x
    x = 6,589,902,370.16/90,489.94
  6. Step 6: Final answer
    x = 72,824.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.